Sulla preparazione matematica all'inizio dell'Università: test, indagini, riflessioni.

The research is aimed to make contribution to understand interrelations and problems between secondary school and university, studying knowledges of mathematics of students. In particular we report and analyze the results of two researches: the first one gives some information about the mathematical preparation of those students which enroll in the mathematics, phisics and engineering faculties; the second one allows to compare professors expectations with evaluation by secondary schools teachers.